Ladle Fumace LF Q-VAC
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Q-VAC

VD-VOD Process and Equipment Control

To control and optimize the vacuum treatment of the liquid steel.

The static process control systems are based on the process energy balance, in combination with operation practice related to the actual initial conditions and final restrictions.  
The dynamic models are based on the process gas analysis. Such information can be used to continuously evaluate the decarburization rate, carbon content, and steel temperature.


VD process - In addition to those for the LF, the main modules involved are: 

  Calculation of the vacuum times required for the removal of S, H, N and C.
  Optimizing calculations of the required amounts of raw materials for slag building, alloying, steel cleaning and cooling purposes. 
  Energy balance providing a continuous prediction of the steel temperature and the cooling rate. 
 

VOD process - In addition to those for the VD, the main modules involved are: 

  Calculation of the blow pattern required for stainless steels, and whether blowing is needed, for other low-carbon steels.
  Dynamic optimization control of the blow, via feedback from gas analyzer, for stainless steels.
  Optimizing calculations of the required amounts of raw materials for slag reduction purposes.